Process for the preparation of L-amino acids using a gene encoding 6-phosphogluconate dehydrogenase

ABSTRACT

The invention relates to a process for the preparation of L-amino acids. The process involves fermenting an L-amino acid producing coryneform bacteria in a culture medium, concentrating L-amino acid produced by the fermenting in the culture medium or in the cells of the bacteria, and isolating the L-amino acid produced. The bacteria has an overexpressed gene encoding 6-phosphogluconate dehydrogenase and a decreased or switched off gene encoding pyruvate oxidase. The L-amino acid may be L-lysine, L-threonine, L-isoleucine or L-tryptophan.

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] The present application is a continuation-in-part of U.S.application Ser. No. 09/531,265, filed on Mar. 20, 2000, the contents ofwhich are incorporated by reference herein in their entirety.

FIELD OF THE INVENTION

[0002] The invention relates to a process for the fermentativepreparation of L-amino acids, in particular L-lysine, L-threonine,L-isoleucine and L-tryptophan, using coryneform bacteria in which atleast the enzyme 6-phosphogluconate dehydrogenase encoded by the gndgene is amplified.

BACKGROUND

[0003] L-Amino acids are used in animal nutrition, in human medicine andin the pharmaceuticals industry and are prepared by fermentation fromstrains of coryneform bacteria, in particular Corynebacteriumglutamicum. Because of their great importance, work is constantly beingundertaken to improve the preparation processes. Improvements may relateto fermentation measures, e.g., stirring and supply of oxygen; thecomposition of the nutrient media, e.g., the sugar concentration duringthe fermentation; the working up to the product form, e.g., by ionexchange chromatography; or the intrinsic output properties of themicroorganism itself.

[0004] Methods of mutagenesis, selection and mutant selection are usedto improve the output properties of these microorganisms. Strains whichare resistant to antimetabolites (e.g., the threonine analogueα-amino-β-hydroxyvaleric acid (AHV), and the lysine analogueS-(2-aminoethyl)-L-cystein (AEC)) or which are auxotrophic formetabolites of regulatory importance and produce L-amino acids such asthreonine or lysine are obtained in this manner.

[0005] Methods utilizing recombinant DNA techniques have also beenemployed for some years for improving Corynebacterium glutamicum strainswhich produce L-amino acids.

SUMMARY OF THE INVENTION

[0006] L-Amino acids are used in human medicine and in thepharmaceuticals industry, in the foodstuffs industry and especially inanimal nutrition. There is therefore a general interest in providingimproved processes for their preparation.

[0007] In general, the present invention is directed to improvedprocesses for the fermentative preparation of L-amino acids bycoryneform bacteria. More specifically, the invention provides a processfor the fermentative preparation of L-amino acids (particularlyL-lysine, L-threonine, L-isoleucine and L-tryptophan) using coryneformbacteria in which the nucleotide sequence which codes for the enzyme6-phosphogluconate dehydrogenase (EC number 1.1.1.44) (gnd gene) isamplified, in particular over-expressed.

BRIEF DESCRIPTION OF THE FIGURES

[0008] Embodiments of the present invention will be described withreference to the following Figures, in which:

[0009]FIG. 1 is a map of the plasmid pEC-Ti 18mob2;

[0010]FIG. 2 is a map of the plasmid pECgnd;

[0011]FIG. 3 is a map of the plasmid pBGNA; and

[0012]FIG. 4 is a map of the plasmid pCR2. 1poxBint.

DETAILED DESCRIPTION OF THE INVENTION

[0013] The strains of bacteria employed in the present processespreferably already produce L-amino acids before amplification of the gndgene. The term “amplification” as used herein describes the increase inthe intracellular activity of one or more enzymes or proteins in amicroorganism which are encoded by the corresponding DNA. This may beaccomplished, for example, by increasing the number of copies of thegene or genes, using a potent promoter or using a gene which codes for acorresponding enzyme having a high activity, or by combining thesemeasures.

[0014] By amplification measures, in particular over-expression, theactivity or concentration of the corresponding enzyme or protein is ingeneral increased by at least 10%, 25%, 50%, 75%, 100%, 150%, 200%,300%, 400% or 500%, up to a maximum of 1000% or 2000%, compared to thatof the wild-type enzyme or the activity or concentration of the enzymein the starting microorganism.

[0015] The microorganisms which the present invention provide canprepare L-aminio acids from glucose, sucrose, lactose, fructose,maltose, molasses, starch, cellulose or from glycerol and ethanol. Theyare representatives of coryneform bacteria, in particular of the genusCorynebacterium. Of the genus Corynebacterium, the most preferredspecies is Corynebacterium glutamicum, which is known among experts forits ability to produce L-amino acids. Suitable strains include thewild-type strains:

[0016]Corynebacteruim glutamicum ATCC13032;

[0017]Corynebacterium acetoglutamicum ATCC15806;

[0018]Corynebacterium acetoacidophilum ATCC13870;

[0019]Corynebacterium thermoaminogenes FERM BP-1539;

[0020]Brevibacterium flavum ATCC14067;

[0021]Brevibacterium lactofermentum ATCC13869;

[0022]Brevibacterium divaricatum ATCC14020;

[0023] L-amino acid-producing mutants prepared from the strains abovemay also be used. f Such strains include: the L-threonine-producingstrains:

[0024]Corynebacteruim glutamicum ATCC2 1649;

[0025]Brevibacterium flavum BB69;

[0026]Brevibacterium flavum DSM5399;

[0027]Brevibacterium lactofermentum FERM-BP 269;

[0028]Brevibacterium lactofermentum TBB-10;

[0029] the L-isoleucine-producing strains:

[0030]Corynebacteruim glutamicum ATCC 14309;

[0031]Corynebacteruim glutamicum ATCC 14310;

[0032]Corynebacteruim glutamicum ATCC 14311;

[0033]Corynebacteruim glutamicum ATCC 15168;

[0034]Corynebacterium ammoniagenes ATCC 6871;

[0035] the L-tryptophan-producing strains:

[0036]Corynebacteruim glutamicum ATCC21850;

[0037]Corynebacteruim glutamicum KY9218(pKW9901);

[0038] and the L-lysine-producing strains:

[0039]Corynebacteruim glutamicum FERM-P 1709;

[0040]Brevibacterium flavum FERM-P 1708;

[0041]Brevibacterium lactofermentum FERM-P 1712;

[0042]Corynebacteruim glutamicum FERM-P 6463;

[0043]Corynebacteruim glutamicum FERM-P 6464;

[0044]Corynebacteruim glutamicum DSM5715;

[0045]Corynebacteruim glutamicum DM58-1; and

[0046]Corynebacteruim glutamicum DSM12866.

[0047] It has been found that coryneform bacteria produce L-amino acids,in particular L-lysine, L-threonine, L-isoleucine and L-tryptophan, inan improved manner after over-expression of the gnd gene. The gnd genecodes for the enzyme 6-phosphogluconate dehydrogenase (EC number1.1.1.44) which catalyses the oxidative decarboxylation of6-phosphogluconic acid to ribulose 5-phosphate. The nucleotide sequenceof the gnd gene is disclosed in JP-A-9-224662. Alleles of the gnd genewhich result from the degeneracy of the genetic code or which are due tosense mutations of neutral function can furthermore be used. Genesencoding proteins with 6-phosphogluconate dehydrogenase activity fromGram-negative bacteria, e.g. Escherichia coli, or other Gram-positivebacteria, e.g., Streptomyces or Bacillus, may optionally be used.

[0048] The use of endogenous, genes in particular endogenous genes fromcoryneform bacteria, is preferred. The terms “endogenous genes” or“endogenous nucleotide sequences” refer to genes or nucleotide sequenceswhich are available in the population of a species.

[0049] To achieve an amplification (e.g., over-expression) of a protein,the number of copies of the corresponding gene is increased, or thepromoter and regulation region or the ribosome binding site upstream ofthe structural gene are mutated. Expression cassettes which areincorporated upstream of the structural gene act in the same way. Usinginducible promoters, it is additionally possible to increase theexpression in the course of fermentative L-amino acid formation.Expression may also be improved by measures to prolong the life of them-RNA. Enzyme activity may be increased by preventing the degradation ofthe enzyme protein.

[0050] Genes or gene constructs may either be provided in plasmids witha varying number of copies, or may be integrated and amplified in thechromosome. Alternatively, an over-expression of the genes in questioncan be achieved by changing the composition of the media and the cultureprocedure. Instructions in this context can be found by the expert,inter alia, in Martin et al. (Bio/Technology 5, 137-146 (1987)), inGuerrero et al. (Gene 138, 35-41 (1994)), Tsuchiya and Morinaga(Bio/Technology 6, 428-430 (1988)), in Eikmanns et al. (Gene 102, 93-98(1991)), in European Patent Specification EPS 0 472 869, in U.S. Pat.No. 4,601,893, in Schwarzer and Puhler (Bio/Technology 9, 84-87 (1991),in Reinscheid et al. (Applied and Environmental Microbiology 60, 126-132(1994)), in LaBarre et al. (Journal of Bacteriology 175, 1001-1007(1993)), in Patent Application WO 96/15246, in Malumbres et al. (Gene134, 15-24 (1993)), in Japanese Laid-Open Specification JP-A-10-229891,in Jensen and Hammer (Biotechnology and Bioengineering 58, 191-195(1998)) and in known textbooks of genetics and molecular biology.

[0051] By way of example, 6-phosphogluconate dehydrogenase wasover-expressed with the aid of a plasmid. The E. coli—C. glutamicumshuttle vector pEC-T18mob2 shown in FIG. 1 was used for this. Afterincorporation of the gnd gene into the EcoRI cleavage site of pEC-T 18mob2, the plasmid pECgnd shown in FIG. 2 was formed. Other plasmidvectors which are capable of replication in C. glutamicum, such aspEKEx1 (Eikmanns et al., Gene 102:93-98 (1991)) or pZ8-1 (EP-B-0 375889), can be used in the same way.

[0052] In addition, it may be advantageous for the production of L-aminoacids to amplify one or more enzymes of the relevant biosynthesispathway, of glycolysis, of anaplerosis, of the pentose phosphate pathwayor of amino acid export, in addition to amplification of the gnd gene.For example, for the preparation of L-threonine, one or more of thefollowing genes can be amplified (over-expressed):

[0053] the hom gene which codes for homoserine dehydrogenase (Peoples etal., Molecular Microbiology 2, 63-72 (1988)) or the hom^(dr) allelewhich codes for a “feed back resistant” homoserine dehydrogenase (Archeret al., Gene 107, 53-59 (1991),

[0054] the gap gene which codes for glyceraldehyde 3-phosphatedehydrogenase (Eikmanns et al., Journal of Bacteriology 174: 6076-6086(1992)),

[0055] the pyc gene which codes for pyruvate carboxylase(Peters-Wendisch et al., Microbiology 144: 915-927 (1998)),

[0056] the mqo gene which codes for malate:quinone oxidoreductase(Molenaar et al., European Journal of Biochemistry 254, 395-403 (1998)),

[0057] the tkt gene which codes for transketolase (accession numberAB023377 of the databank of European Molecular Biology Laboratories(EMBL, Heidelberg, Germany)),

[0058] the zwf gene which codes for glucose 6-phosphate dehydrogenase(JP-A-09224661),

[0059] the thrE gene which codes for threonine export (DE 199 41 478.5;DSM 12840),

[0060] the zwal gene (DE 199 59 328.0; DSM 13115),

[0061] the eno gene which codes for enolase (DE: 199 41 478.5).

[0062] For the preparation of L-lysine, one or more of the followinggenes can be amplified, in particular over-expressed, at the same timeas gnd.

[0063] the dapA gene which codes for dihydrodipicolinate synthase (EP-B0 197 335),

[0064] a lysC gene which codes for a feed back resistant aspartatekinase (Kalinowski et al. (1990), Molecular and General Genetics 224:317-324),

[0065] the gap gene which codes for glyceraldehyde 3-phosphatedehydrogenase (Eikmanns (1992), Journal of Bacteriology 174:6076-6086),

[0066] the pyc gene which codes for pyruvate carboxylase (Eikmanns(1992), Journal of Bacteriology 174:6076-6086),

[0067] the mqo gene which codes for malate-quinone oxidoreductase(Molenaar et al., European Journal of Biochemistry 254, 395-403 (1998)),

[0068] the tkt gene which codes for transketolase (accession numberAB023377 of the databank of European Molecular Biologies Laboratories(EMBL, Heidelberg, Germany)),

[0069] the zwf gene which codes for glucose 6-phosphate dehydrogenase(JP-A-09224661),

[0070] the lysE gene which codes for lysine export (DE-A-195 48 222),

[0071] the zwa1 gene (DE 199 59 328.0; DSM 13115),

[0072] the eno gene which codes for enolase (DE 199 47 791.4).

[0073] The use of endogenous genes is preferred.

[0074] It may furthermore be advantageous for the production of L-aminoacids to attenuate one or more of the following genes while at the sametime amplifying gnd: the pck gene which codes for phosphoenol pyruvatecarboxykinase (DE 199 50 409.1; DSM 13047),

[0075] the pgi gene which codes for glucose 6-phosphate isomerase (U.S.Ser. No. 09/396,478, DSM 12969),

[0076] the poxB gene which codes for pyruvate oxidase (DE 199 51 975.7;DSM 13114),

[0077] the zwa2 gene (DE: 199 59 327.2; DSM 13113).

[0078] In this connection, the term “attenuation” means reducing orsuppressing the intracellular activity or concentration of one or moreenzymes or proteins in a microorganism. This may be accomplished usingthe genes which encode the proteins, for example by using a weakpromoter or a gene or allele which codes for a corresponding proteinwhich has a low activity or inactivates the corresponding enzyme andoptionally by combining these measures. By attenuation measures, theactivity or concentration of the corresponding enzyme or protein is ingeneral reduced to 0 to 75%, 0 to 50%, 0 to 25%, 0 to 10% or 0 to 5% ofthe activity or concentration of the wild-type enzyme or of the activityor concentration of the enzyme in the starting microorganism.

[0079] In addition to over-expression of 6-phosphogluconatedehydrogenase, it may furthermore be advantageous for the production ofL-amino acids to eliminate undesirable side reactions (see, Nakayama:“Breeding of Amino Acid Producing Micro-organisms organisms,” in:Overproduction of Microbial Products, Krumphanzl, Sikyta, Vanek (eds.),Academic Press, London, UK, 1982).

[0080] The microorganisms prepared according to the invention can becultured continuously or discontinuously in a batch process (batchculture) or in a fed batch (feed process) or repeated fed batch process(repetitive feed process) for the purpose of L-amino acid production. Asummary of known culture methods is described in the textbook by Chmiel(Bioprozesstechnik 1. Einfuhrung in die Bioverfahrenstechnik [BioprocessTechnology 1. Introduction to Bioprocess Technology (Gustav FischerVerlag, Stuttgart, 1991)] or in the textbook by Storhas (Bioreaktorenund periphere Einrichtungen [Bioreactors and Peripheral Equipment](Vieweg Verlag, Braunschweig/Wiesbaden, 1994)). The culture medium to beused must meet the requirements of the particular microorganisms in asuitable manner. Descriptions of culture media for variousmicroorganisms are contained in the handbook “Manual of Methods forGeneral Bacteriology” of the American Society for Bacteriology(Washington D.C., USA, 1981). Sugars and carbohydrates, such as e.g.glucose, sucrose, lactose, fructose, maltose, molasses, starch andcellulose, oils and fats, such as e.g. soya oil, sunflower oil,groundnut oil and coconut fat, fatty acids, such as e.g. palmitic acid,stearic acid and linoleic acid, alcohols, such as e.g. glycerol andethanol, and organic acids, such as e.g. acetic acid, can be used as thesource of carbon. These substances can be used individually or as amixture. Organic nitrogen-containing compounds, such as peptones, yeastextract, meat extract, malt extract, corn steep liquor, soya bean flourand urea, or inorganic compounds, such as ammonium sulfate, ammoniumchloride, ammonium phosphate, ammonium carbonate and ammonium nitrate,can be used as the source of nitrogen. The sources of nitrogen can beused individually or as a mixture. Potassium dihydrogen phosphate ordipotassium hydrogen phosphate or the corresponding sodium-containingsalts can be used as the source of phosphorus. The culture medium mustfurthermore comprise salts of metals, such as e.g. magnesium sulfate oriron sulfate, which are necessary for growth. Finally, essential growthsubstances, such as amino acids and vitamins, can be employed inaddition to the above-mentioned substances. Suitable precursors canmoreover be added to the culture medium. The starting substancesmentioned can be added to the culture in the form of a single batch, orcan be fed in during the culture in a suitable manner.

[0081] Basic compounds, such as sodium hydroxide, potassium hydroxide,ammonia, or acid compounds, such as phosphoric acid or sulfuric acid,can be employed in a suitable manner to control the pH. Antifoams, suchas fatty acid polyglycol esters, can be employed to control thedevelopment of foam. Suitable substances having a selective action, e.g.antibiotics, can be added to the medium to maintain the stability ofplasmids. To maintain aerobic conditions, oxygen or oxygen-containinggas mixtures, such as e.g. air, are introduced into the culture. Thetemperature of the culture is usually 20° C. to 45° C., and preferably25° C. to 40° C. Culturing is continued until a maximum of L-amino acidhas formed. This target is usually reached within 10 hours to 160 hours.

[0082] The analysis of L-amino acids can be carried out by anionexchange chromatography with subsequent ninhydrin derivation, asdescribed by Spackman et al. (Analytical Chemistry, 30, (1958), 1190),or it can take place by reversed phase HPLC as described by Lindroth etal. (Analytical Chemistry (1979) 51:. 1167-1174).

[0083] The following microorganism has been deposited at the DeutscheSammlung fu ar Mikroorganismen und Zellkulturen (DSMZ=German Collectionof Microorganisms and Cell Cultures, Braunschweig, Germany) inaccordance with the Budapest Treaty: Escherichia coli K-12DH5α/pEC-T18mob2 as DSM 13244.

[0084] In the accompanying Figures, the base pair numbers stated areapprox. values obtained in the context of reproducibility. Theabbreviations used in the Figures have the following meaning:

[0085] In FIG. 1: Tet: Resistance gene for tetracycline oriV:Plasmid-coded replication origin of E. coli RP4mob: mob region formobilizing the plasmid rep: Plasmid-coded replication origin from C.glutamicum plasmid pGA1 per: Gene for controlling the number of copiesfrom pGA1 lacZ-alpha: lacZα gene fragment (N-terminus) of theβ-Galactosidase gene.

[0086] In FIG. 2: Tet: Resistance gene for tetracycline rep:Plasmid-coded replication origin from C. glutamicum plasmid pGA1 per:Gene for controlling the number of copies from PGA1 lacZ Cloning relictof the lacZα gene fragment from pEC-T18mob2 gnd: 6-Phosphogluconatedehydrogenase gene.

[0087] In FIG. 3: LacP: Promoter of the E. coli lactose operon CMV:Promoter of cytomegalovirus ColE1: Replication origin of the plasmidColE1 TkpolyA: Polyadenylation site Kan r: Kanamycin resistance geneSV40ori: Replication origin of Simian virus 40 gnd: 6-Phosphogluconatedehydrogenase gene.

[0088] In FIG. 4: ColE1 ori: Replication origin of the plasmid ColE1lacZ: Cloning relict of the lacZα gene fragment fl ori: Replicationorigin of phage fl KmR: Kanamycin resistance ApR: Ampicillin resistancepoxBint: internal fragment of the poxB gene

[0089] The following abbreviations have also been used herein: AccI:Cleavage site of the restriction enzyme AccI BamHI: Cleavage site of therestriction enzyme BamHI EcoRI: Cleavage site of the restriction enzymeEcoRI HindIII: Cleavage site of the restriction enzyme HindIII KpnI:Cleavage site of the restriction enzyme KpnI PstI: Cleavage site of therestriction enzyme PstI PvuI: Cleavage site of the restriction enzymePvuI SalI: Cleavage site of the restriction enzyme SalI SacI: Cleavagesite of the restriction enzyme SacI SmaI: Cleavage site of therestriction enzyme SmaI SphI: Cleavage site of the restriction enzymeSphI XbaI: Cleavage site of the restriction enzyme XbaI XhoI: Cleavagesite of the restriction enzyme XhoI

[0090] The following examples will further illustrate this invention.The molecular biology techniques, e.g. plasmid DNA isolation,restriction enzyme treatment, ligations, standard transformations ofEscherichia coli etc. used are, (unless stated otherwise), are describedby Sambrook et al., (Molecular Cloning. A Laboratory Manual (1989) ColdSpring Harbor Laboratories, USA).

EXAMPLE 1 Construction of a Gene Library of Corynebacterium glutamicumStrain ASO019

[0091] A DNA library of Corynebacteruim glutamicum strain AS019(Yoshihama et al., Journal of Bacteriology 162, 591-597 (1985)) wasconstructed using λZap Express™ system, (Short et al., (1988) NucleicAcids Research 16: 7583-7600), as described by O'Donohue (O'Donohue, M.(1997). The Cloning and Molecular Analysis of Four Common Aromatic AminoAcid Biosynthetic Genes from Corynebacterium glutamicum. Ph.D. Thesis,National University of Ireland, Galway). λZap Express™ kit was purchasedfrom Stratagene (Stratagene, 11011 North Torrey Pines Rd., La Jolla,Calif. 92037) and used according to the manufacturer's instructions.AS019-DNA was digested with restriction enzyme Sau3A and ligated toBamHI treated and dephosphorylated λZap Express™ arms.

EXAMPLE 2: Cloning and Sequencing of the gnd Gene 2.1 Construction of agnd Probe

[0092] A radio-labeled oligonucleotide, internal to the gnd gene, wasused to probe the AS019 λZap Express™ library described above. Theoligonucleotide was produced using degenerate PCR primers internal tothe gnd gene. The degenerate nucleotide primers designed for the PCRamplification of gnd DNA fragments were as follows:

[0093] gnd1: 5′ ATG GTK CAC ACY GGY ATY GAR TA 3′ (SEQ ID NO 7)

[0094] gnd2: 5′ RGT CCA YTT RCC RGT RCC YTT 3′ (SEQ ID NO 8)

[0095] with R=A+G; Y=C+T; K=T+G.

[0096] The estimated size of the resulting PCR product was 252 bpapproximately. Optimal PCR conditions were determined to be as follows:

[0097] 35 cycles

[0098] 94° C. for 1 minute

[0099] 55° C. for 1 minute

[0100] 72° C. for 30 seconds

[0101] 2.5-3.5 mM MgCl₂

[0102] 100-150 ng AS019 genomic DNA.

[0103] Sequence analysis of the resulting PCR product confirmed theproduct to be an internal portion of a gnd gene. Sequence analysis wascarried out using the universal forward and reverse primers, and T7sequencing kit from Pharmacia Biotech, (St. Albans, Herts, UK). Thesequence of the PCR product is shown in SEQ ID No. 1.

[0104] 2.2 Cloning

[0105] Screening of the AS019 λZap Express™ library was carried outaccording to the λZap Express™ system protocol, (Stratagene, 11011 NorthTorrey Pines Rd., La Jolla, Calif. 92037). Southern Blot analysis wasthen carried out on isolated clones. Southern transfer of DNA was asdescribed in the Schleicher and Schuell protocols manual employingNytran™ as membrane (“Nytran, Modified Nylon-66 Membrane Filters” (March1987), Schleicher and Schuell, Dassel, Germany). Double stranded DNAfragments, generated using the same primers and optimal PCR conditionsas described above, were radio-labeled with α-³²P-dCTP using theMultiprime™ DNA labeling kit from Amersham Life Science (AmershamPharmacia Biotech UK Limited, Little Chalfont, Buckinghamshire, UK)according to the manufacturers instructions. Prehybridization,hybridization and washing conditions were as described in the Schleicherand Schuell protocols manual. Autoradiography was carried out accordingto the procedure outlined in the handbook of Sambrook et al. using AgFaCurix RPIL film. Thus several gnd clones were identified. Plasmid DNAwas isolated from one of the clones, designated pBGNA (FIG. 3) andchosen for further analysis.

[0106] 2.3 Sequencing

[0107] The Sanger Dideoxy chain termination method of Sanger et al.(Proceedings of the National Academy of Sciences USA 74, 5463-5467(1977)) was used to sequence the cloned insert of pBGNA. The method wasapplied using the T7 sequencing kit and α-³⁵S-dCTP from PharmaciaBiotech (St. Albans, Herts, UK). Samples were electrophoresed for 3-8hours on 6% polyacrylamide/urea gels in TBE buffer at a constant currentof 50 mA, according to the Pharmacia cloning and sequencing instructionsmanual (“^(T7) Sequencing™Kit”,ref.XY-010-00-19, Pharmacia Biotech,1994). Sequence analysis was carried out using internal primers designedfrom the sequence known of the internal gnd PCR product (SEQ ID NO 1)allowing the entire gnd gene sequence to be deduced. The sequences ofthe internal primers were as follows:

[0108] Internal primer 1: 5′ GGT GGA TGC TGA AAC CG 3′ (SEQ ID NO 9)

[0109] Internal primer 2: 5′ GCT GCA TGC CTG CTG CG 3′ (SEQ ID NO 10)

[0110] Internal primer 3: 5′ TTG TTG CTT ACG CAC AG 3′ (SEQ ID NO 11)

[0111] Internal primer 4: 5′ TCG TAG GAC TTT GCT GG 3′ (SEQ ID NO 12)

[0112] Sequences obtained were analyzed using the DNA Strider program,(Marck (1988), Nucleic Acids Research 16: 1829-1836), version 1.0 on anApple Macintosh computer. This program allowed for analyses such asrestriction site usage, open reading frame analysis and codon usagedetermination. Searches between DNA sequences obtained and those in EMBLand Genbank databases were performed using the BLAST program (Altschulet al., (1997), Nucleic Acids Research 25: 3389-3402). DNA and proteinsequences were aligned using the Clustal V and Clustal W programs(Higgins and Sharp, 1988 Gene 73: 237-244).

[0113] The sequence thus obtained is shown in SEQ ID NO 2. The analysisof the nucleotide sequence obtained revealed an open reading frame of1377 base pairs which was designated as gnd gene. It codes for a proteinof 459 amino acids shown in SEQ ID NO 3.

EXAMPLE 3 Preparation of the Shuttle Vector pEC-T18mob2

[0114] The E. coli—C. glutamicum shuttle vector pEC-T18mob2 wasconstructed according to the prior art. The vector contains thereplication region, rep, of the plasmid pGA I including the replicationeffector, per (US-A-5,175,108; Nesvera et al., Journal of Bacteriology179, 1525-1532 (1997)), the tetracycline resistance-imparting tetA(Z)gene of the plasmid, pAG1 (US-A-5,158,891; gene library entry at theNational Center for Biotechnology Information (NCBI, Bethesda, Md., USA)with accession number AF121000), the replication region, oriV, of theplasmid pMB I (Sutcliffe, Cold Spring Harbor Symposium on QuantitativeBiology 43, 77-90 (1979)), the lacZ gene fragment including the lacpromoter and a multiple cloning site (mcs) (Norrander et al. Gene 26,101-106 (1983)) and the mob region of the plasmid RP4 (Simon etal.,(1983) Bio/Technology 1:784-791).

[0115] The vector constructed was transformed in the E. coli strainDH5(x (Hanahan, In: DNA cloning. A practical approach. Vol. I.IRL-Press, Oxford, Washington D.C., USA, 1985). Selection forplasmid-carrying cells was made by plating out the transformation batchon LB agar (Sambrook et al., Molecular cloning: a laboratory manual.2^(nd) Ed. Cold Spring Harbor Laboratory Press, Cold Spring Harbor,N.Y., USA, 1989), which had been supplemented with 5 mg/l tetracycline.Plasmid DNA was isolated from a transformant with the aid of the QlAprepSpin Miniprep Kit from Qiagen and checked by restriction with therestriction enzyme EcoRI and HindIII subsequent agarose gelelectrophoresis (0.8%). The plasmid was called pEC-Tl8mob2 and is shownin FIG. 1. It is deposited in the form of the strain Escherichia coliK-12 strain DH5α/pEC-Tl8mob2 at the Deutsche Sammlung firMikroorganismen und Zellkulturen (DSMZ=German Collection ofMicroorganisms and Cell Cultures, Braunschweig, Germany) as DSM 13244.

EXAMPLE 4 Cloning of the gnd Gene into the E. coli—C. glutamicum ShuttleVector pEC-T18mob2

[0116] PCR was used to amplify DNA fragments containing the entire gndgene of C. glutamicum and flanking upstream and downstream regions usingpBGNA as template. PCR reactions were carried out using oligonucleotideprimers designed from SEQ ID NO 2. The primers used were:

[0117] gnd fwd. primer: 5′ ACT CTA GTC GGC CTA AAA TGG 3′ (SEQ ID NO 13)

[0118] gnd rev. primer: 5′ CAC ACA GGA AAC AGA TAT GAC 3′ (SEQ ID NO14).

[0119] PCR parameters were as follows:

[0120] 35 cycles

[0121] 95° C. for 6 minutes

[0122] 94° C. for 1 minute

[0123] 50° C. for 1 minute

[0124] 72° C. for 45 seconds

[0125] 1 mM MgC1₂

[0126] approx. 150-200ng pBGNA-DNA as template.

[0127] The PCR product obtained was cloned into the commerciallyavailable pGEM-T vector purchased from Promega Corp. (pGEM-T Easy VectorSystem 1, cat. no. A1360, Promega UK, Southampton) using E. coli strainJM109 (Yanisch-Perron et al. Gene, 33: 103-119 (1985)) as a host. Theentire gnd gene was subsequently isolated from the pGEM T-vector on anEcoRI fragment and cloned into the lacZ EcoRI site of the E. coli—C.glutamicum shuttle vector pEC-T18mob2 (FIG. 1), and designated pECgnd(FIG. 2). Restriction enzyme analysis with AccI (Boehringer MannheimGmbH, Germany) revealed the correct orientation (i.e., downstream thelac-Promotor) of the gnd gene in the lacZα gene of pEC-T18mob2.

[0128] EXAMPLE 5

Preparation of Amino Acid Producers with Amplified 6-phosphogluconateDehydrogenase

[0129] Plasmid pECgnd from Example 3 was electroporated by theelectroporation method of Tauch et al. (FEMS Microbiological Letters,123:343-347 (1994)) in the strains Corynebacteruim glutamicum DSM 5399and DSM 5714. The strain DSM 5399 is a threonine producer described inEP-B-0358940. The strain DSM 5714 is a lysine producer described inEP-B-0435132. Selection of transformants was carried out by plating outthe electroporation batch on LB agar (Sambrook et al., Molecularcloning: a laboratory manual. 2^(nd) Ed. Cold Spring Harbor LaboratoryPress, Cold Spring Harbor, N.Y., 1989), which had been supplemented with25 mg/l kanamycin. The strains DSM5399/pECgnd and DSM5714/pECgnd wereformed in this manner.

EXAMPLE 6 Preparation of Threonine

[0130] The C. glutamicum strain DSM5399/pECgnd obtained in Example 5 wascultured in a nutrient medium suitable for the production of threonineand the threonine content in the culture supernatant was determined. Forthis, the strain was first incubated on an agar plate with thecorresponding antibiotic (brain-heart agar with tetracycline (5 mg/l))for 24 hours at 33° C. Starting from this agar plate culture, apreculture was seeded (10 ml medium in a 100 ml conical flask).Brain-heart broth (Merck, Darmstadt, Germany) was used as the medium forthe preculture. Tetracycline (5 mg/ l) was added to this medium. Thepreculture was incubated for 24 hours at 33° C. at 240 rpm on a shakingmachine. A main culture was seeded from this preculture such that theinitial OD (660 nm) of the main culture was 0.1. The medium MM-threoninewas used for the main culture. Medium MM-threonine CSL 5 g/l MOPS 20 g/lGlucose(autoclaved separately) 50 g/l Salts: (NH₄)₂SO₄ 25 g/l KH₂PO₄ 0.1g/l MgSO₄ * 7 H₂O 1.0 g/l CaCl₂ * 2 H₂O 10 mg/l FeSO₄ * 7 H₂O 10 mg/lMnSO₄ * H₂O 5.0 mg/l Biotin (sterile-filtered) 0.3 mg/l Thiamine * HCl(sterile-filtered) 0.2 mg/l CaCO₃ 25 g/l

[0131] The CSL (corn steep liquor), MOPS (morpholinopropanesulfonicacid) and the salt solution were brought to pH 7 with aqueous ammoniaand autoclaved. The sterile substrate and vitamin solutions were thenadded, as well as the CaCO₃ autoclaved in the dry state. Culturing iscarried out in a 10 ml volume in a 100 ml conical flask with baffles.Tetracycline (5 mg/l) was added. Culturing was carried out at 33° C. and80% atmospheric humidity. After 48 hours, the OD was determined at ameasurement wavelength of 660 nm with a Biomek 1000 (BeckmannInstruments GmbH, Munich). The concentration of threonine formed wasdetermined with an amino acid analyzer from Eppendorf-BioTronik(Hamburg, Germany) by ion exchange chromatography and post-columnderivation with ninhydrin detection. The result of the experiment isshown in Table 1. TABLE 1 OD L-Threonin Strain (660 nm) g/lDSM5399/pECgnd 11.9 1.29 DSM5399 11.8 0.33

EXAMPLE 7 Preparation of Lysine

[0132] The C. glutamicum strain DSM5714/pECgnd obtained in Example 5 wascultured in a nutrient medium suitable for the production of lysine andthe lysine content in the culture supernatant was determined. For this,the strain was first incubated on an agar plate with the correspondingantibiotic (brain-heart agar with tetracycline (5 mg/l)) for 24 hours at33° C. Starting from this agar plate culture, a preculture was seeded(10 ml medium in a 100 ml conical flask). The complete medium Cg III wasused as the medium for the preculture. Medium Cg III NaCl 2.5 g/lBacto-Peptone 10 g/l Bacto-Yeast extract 10 g/l Glucose (autoclavedseparately) 2% (w/v)

[0133] Tetracycline (5 mg/l) was added to this medium. The preculturewas incubated for 24 hours at 33° C. at 240 rpm on a shaking machine. Amain culture was seeded from this preculture such that the initial OD(660nm) of the main culture was 0.05. Medium MM was used for the mainculture. Medium MM CSL (corn steep liquor) 5 g/l MOPS(morpholinopropanesulfonic acid) 20 g/l Glucose (autoclaved separately)50 g/l (NH₄)₂SO₄ KH₂PO₄ 25 g/l MgSO₄ * 7 H₂O 0.1 g/l CaCl₂ * 2 H₂O 1.0g/l FeSO₄ * 7 H₂O 10 mg/l MnSO₄ * H₂O 10 mg/l Biotin (sterile-filtered)0.3 mg/l Thiamine * HCl (sterile-filtered) 0.2 mg/l L-Leucine(sterile-filtered) 0.1 g/l CaCO₃ 25 g/l

[0134] The CSL, MOPS and the salt solution were brought to pH 7 withaqueous ammonia and autoclaved. The sterile substrate and vitaminsolutions were then added, as well as the CaCO₃ autoclaved in the drystate. Culturing was carried out in a 10 ml volume in a 100 ml conicalflask with baffles. Tetracycline (5 mg/l) was added. Culturing wascarried out at 33° C. and 80% atmospheric humidity.

[0135] After 48 hours, the OD was determined at a measurement wavelengthof 660 nm with a Biomek 1000 (Beckmann Instruments GmbH, Mu inchen). Theamount of lysine formed was determined with an amino acid analyzer fromEppendorf-BioTronik (Hamburg, Germany) by ion exchange chromatographyand post-column derivation with ninhydrin detection. The result of theexperiment is shown in Table 2. TABLE 2 OD Lysine HCl Strain (660 nm)g/l DSM5715/pECgnd 7.7 14.7 DSM5715 7.1 13.7

EXAMPLE 8 Preparation of a Genomic Cosmid Gene Library fromCorynebacteruim glutamicum ATCC 13032

[0136] Chromosomal DNA from Corynebacteruim glutamicum ATCC 13032 wasisolated as described by Tauch et al., (1995, Plasmid 33:168-179), andpartly cleaved with the restriction enzyme Sau3AI (Amersham Pharmacia,Freiburg, Germany, Product Description Sau3AI, Code no. 27-0913-02). TheDNA fragments were dephosphorylated with shrimp alkaline phosphatase(Roche Molecular Biochemicals, Mannheim, Germany, Product DescriptionSAP, Code no. 1758250). The DNA of the cosmid vector SuperCosl (Wahl etal. (1987) Proceedings of the National Academy of Sciences USA84:2160-2164), obtained from Stratagene (La Jolla, USA, ProductDescription SuperCosl Cosmid Vektor Kit, Code no. 251301) was cleavedwith the restriction enzyme XbaI (Amersham Pharmacia, Freiburg, Germany,Product Description XbaI, Code no. 27-0948-02) and likewisedephosphorylated with shrimp alkaline phosphatase.

[0137] The cosmid DNA was then cleaved with the restriction enzyme BamHi(Amersham Pharmacia, Freiburg, Germany, Product Description BamHI, Codeno. 27-0868-04). The cosmid DNA treated in this manner was mixed withthe treated ATCC13032 DNA and the batch was treated with T4 DNA ligase(Amersham Pharmacia, Freiburg, Germany, Product DescriptionT4-DNA-Ligase, Code no.27-0870-04). The ligation mixture was then packedin phages with the aid of Gigapack II XL Packing Extracts (Stratagene,La Jolla, USA, Product Description Gigapack II XL Packing Extract, Codeno. 200217). For infection of the E. coli strain NM554 (Raleigh et al.1988, Nucleic Acid Research 16:1563-1575) the cells were taken up in 10mM MgSO₄ and mixed with an aliquot of the phage suspension. Theinfection and titering of the cosmid library were carried out asdescribed by Sambrook et al. (1989, Molecular Cloning: A laboratoryManual, Cold Spring Harbor), the cells being plated out on LB agar(Lennox, 1955, Virology 1:190)+100 μg/ml ampicillin. After incubationovernight at 37° C., recombinant individual clones were selected.

EXAMPLE 9 Isolation and Sequencing of the poxB Gene

[0138] The cosmid DNA of an individual colony (Example 8) was isolatedwith the Qiaprep Spin Miniprep Kit (Product No. 27106, Qiagen, Hilden,Germany) in accordance with the manufacturer's instructions and partlycleaved with the restriction enzyme Sau3AI (Amersham Pharmacia,Freiburg, Germany, Product Description Sau3AI, Product No. 27-0913-02).The DNA fragments were dephosphorylated with shrimp alkaline phosphatase(Roche Molecular Biochemicals, Mannheim, Germany, Product DescriptionSAP, Product No. 1758250). After separation by gel electrophoresis, thecosmid fragments in the size range of 1500 to 2000 bp were isolated withthe QiaExII Gel Extraction Kit (Product No. 20021, Qiagen, Hilden,Germany). The DNA of the sequencing vector pZero-1, obtained fromInvitrogen (Groningen, Holland, Product Description Zero BackgroundCloning Kit, Product No. K2500-01) was cleaved with the restrictionenzyme BamHI (Amersham Pharmacia, Freiburg, Germany, Product DescriptionBamHI, Product No. 27-0868-04).

[0139] The ligation of the cosmid fragments in the sequencing vectorpZero-1 was carried out as described by Sambrook et al. (1989, MolecularCloning: A laboratory Manual, Cold Spring Harbor), the DNA mixture beingincubated overnight with T4 ligase (Pharmacia Biotech, Freiburg,Germany). This ligation mixture was then electroporated (Tauch et al.1994, FEMS Microbiol Letters, 123:343-7) into the E. coli strain DH5αcMCR (Grant, 1990, Proceedings of the National Academy of SciencesU.S.A., 87:4645-4649) and plated out on LB agar (Lennox, 1955, Virology,1:190) with 50 μg/ml zeocin. The plasmid preparation of the recombinantclones was carried out with Biorobot 9600 (Product No. 900200, Qiagen,Hilden, Germany). The sequencing was carried out by the dideoxychain-stopping method of Sanger et al. (1977, Proceedings of theNational Academies of Sciences U.S.A., 74:5463-5467) with modificationsaccording to Zimmermann et al. (1990, Nucleic Acids Research, 18:1067).The “RR dRhodamin Terminator Cycle Sequencing Kit” from PE AppliedBiosystems(Product No. 403044, Weiterstadt, Germany) was used. Theseparation by gel electrophoresis and analysis of the sequencingreaction were carried out in a “Rotiphoresis NFAcrylamide/Bisacrylamide” Gel (29:1) (Product No. A124.1, Roth,Karlsruhe, Germany) with the “ABI Prism 377” sequencer from PE AppliedBiosystems (Weiterstadt, Germany).

[0140] The raw sequence data obtained were then processed using theStaden program package (1986, Nucleic Acids Research, 14:217-231)version 97-0. The individual sequences of the pZerol derivatives wereassembled to a continuous contig. The computer-assisted coding regionanalysis were prepared with the XNIP program (Staden, 1986, NucleicAcids Research 14:217-231). Further analyses were carried out with the“BLAST search program” (Altschul et al., 1997, Nucleic Acids Research25:3389-3402), against the non-redundant databank of the “NationalCenter for Biotechnology Information” (NCBI, Bethesda, Md., USA).

[0141] The resulting nucleotide sequence is shown in SEQ ID No. 4.Analysis of the nucleotide sequence showed an open reading frame of 1737base pairs, which was called the poxB gene. The poxB gene codes for apolypeptide of 579 amino acids (SEQ ID NO. 5).

EXAMPLE 10 Preparation of an Integration Vector for IntegrationMutagenesis of the poxB Gene

[0142] From the strain ATCC 13032, chromosomal DNA was isolated by themethod of Eikmanns et al. (Microbiology 140: 1817-1828 (1994)). On thebasis of the sequence of the poxB gene known for C. glutamicum fromExample 9, the following oligonucleotides were chosen for the polymerasechain reaction:

[0143] poxBint1 (SEQ ID NO 15): 5′ TGC GAG ATG GTG AAT GGT GG 3′

[0144] poxBint2 (SEQ ID NO 16): 5′ GCA TGA GGC AAC GCA TTA GC 3′

[0145] The primers shown were synthesized by MWG Biotech (Ebersberg,Germany) and the PCR reaction was carried out by the standard PCR methodof Innis et al. (PCR protocols. A guide to methods and applications,1990, Academic Press) with Pwo-Polymerase from Boehringer. With the aidof the polymerase chain reaction, a DNA fragment approx. 0.9 kb in sizewas isolated, this carrying an internal fragment of the poxB gene andbeing shown in SEQ ID No:6.

[0146] The amplified DNA fragment was ligated with the TOPO TA CloningKit from Invitrogen Corporation (Carlsbad, Calif., USA; Catalogue NumberK4500-01) in the vector pCR2.1-TOPO (Mead at al. (1991) Bio/Technology9:657-663). The E. coli Stamm DH5α was then electroporated with theligation batch (Hanahan, In: DNA cloning. A practical approach. Vol. I.IRL-Press, Oxford, Washington D.C., USA, 1985). Selection forplasmid-carrying cells was made by plating out the transformation batchon LB agar (Sambrook et al., Molecular cloning: a laboratory manual.2^(nd) Ed. Cold Spring Harbor Laboratory Press, Cold Spring Harbor,N.Y., 1989), which had been supplemented with 25 mg/l kanamycin. PlasmidDNA was isolated from a transformant with the aid of the QIAprep SpinMiniprep Kit from Qiagen and checked by restriction with the restrictionenzyme EcoRI and subsequent agarose gel electrophoresis (0.8%). Theplasmid was called pCR2.1poxBint (FIG. 4).

[0147] Plasmid pCR2.1 poxBint has been deposited in the form of thestrain Escherichia coli DH5α/pCR2. lpoxBint as DSM 13114 at the DeutscheSammlung f dir Mikroorganismen und Zellkulturen (DSMZ=German Collectionof Microorganisms and Cell Cultures, Braunschweig, Germany) inaccordance with the Budapest Treaty.

EXAMPLE 11 Integration Mutagenesis of the poxB Gene in the LysineProducer DSM 5715

[0148] The vector pCR2.1poxBint mentioned in Example 10 waselectroporated by the electroporation method of Tauch et al.(FEMSMicrobiological Letters, 123:343-347 (1994)) in Corynebacteruimglutamicum DSM 5715. Strain DSM 5715 is an AEC-resistant lysineproducer. The vector pCR2.1poxBint cannot replicate independently inDSM5715 and is retained only if it has integrated into the cell'schromosome. Selection of clones with pCR2.1poxBint integrated into thechromosome was carried out by plating out the electroporation batch onLB agar (Sambrook et al., Molecular Cloning: A Laboratory Manual. 2^(nd)ed., Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y.),which had been supplemented with 15 mg/l kanamycin. For detection of theintegration, the poxBint fragment was labeled with the Dig hybridizationkit from Boehringer by the method of “The DIG System Users Guide forFilter Hybridization” of Boehringer Mannheim GmbH (Mannheim, Germany,1993). Chromosomal DNA of a potential integrant was isolated by themethod of Eikmanns et al. (Microbiology 140: 1817-1828 (1994)) and ineach case cleaved with the restriction enzymes SalI, SacI and HindIII.The fragments formed were separated by agarose gel electrophoresis andhybridized at 68° C. with the Dig hybridization kit from Boehringer. Theplasmid pCR2.1poxBint mentioned in Example 9 had been inserted into thechromosome of DSM5715 within the chromosomal poxB gene. The strain wascalled DSM5715::pCR2.1poxBint.

EXAMPLE 12 Effect of Over-expression of the gnd Gene with SimultaneousElimination of the poxB Gene on the Preparation of Lysine

[0149] 12.1 Preparation of the Strain DSM5715::pCR2.1poxBint/pECgnd

[0150] The strain DSM5715::pCR2.1poxBint was transformed with theplasmid pECgnd using the electroporation method described by Liebl etal., (FEMS Microbiology Letters, 53:299-303 (1989)). Selection of thetransformants took place on LBHIS agar comprising 18.5 g/l brain-heartinfusion broth, 0.5 M sorbitol, 5 g/l Bacto-tryptone, 2.5 g/lBacto-yeast extract, 5 g/l NaCl and 18 g/l Bacto-agar, which had beensupplemented with 5 mg/l tetracycline and 25 mg/l kanamycin. Incubationwas carried out for 2 days at 33° C.

[0151] Plasmid DNA was isolated in each case from a transformant byconventional methods (Peters-Wendisch et al., 1998, Microbiology 144,915-927), cleaved with the restriction endonuclease AccI, and theplasmid was checked by subsequent agarose gel electrophoresis. Thestrain obtained in this way was called DSM5715 :pCR2.1poxBint/pECgnd.

[0152] 12.2 Preparation of L-lysine

[0153] The C. glutamicum strain DSM5715::pCR2.1poxBint/pECgnd obtainedin Example 12.1 was cultured in a nutrient medium suitable for theproduction of lysine and the lysine content in the culture supernatantwas determined. For this, the strain was first incubated on an agarplate with the corresponding antibiotic (brain-heart agar withtetracycline (5 mg/l) and kanamycin (25 mg/l)) for 24 hours at 33° C.The cultures of the comparison strains were supplemented according totheir resistance to antibiotics. Starting from this agar plate culture,a preculture was seeded (10 ml medium in a 100 ml conical flask). Thecomplete medium CgIII was used as the medium for the preculture. MediumCg III NaCl 2.5 g/l Bacto-Peptone 10 g/l Bacto-Yeast extract 10 g/lGlucose (autoclaved separately) 2% (w/v)

[0154] Tetracycline (5 mg/l) and kanamycin (25 mg/l) were added to this.The preculture was incubated for 16 hours at 33° C. at 240 rpm on ashaking machine. A main culture was seeded from this preculture suchthat the initial OD (660nm) of the main culture was 0.1. Medium MM wasused for the main culture. Medium MM CSL (corn steep liquor) 5 g/l MOPS(morpholinopropanesulfonic acid) 20 g/l Glucose (autoclaved separately)58 g/l (NH₄)₂SO₄ 25 g/l KH₂PO₄ 0.1 g/l MgSO₄ * 7 H₂O 1.0 g/l CaCl₂ * 2H₂O 10 mg/l FeSO₄ * 7 H₂O 10 mg/l MnSO₄ * H₂O 5.0 mg/l Biotin(sterile-filtered) 0.3 mg/l Thiamine * HCl (sterile-filtered) 0.2 mg/lL-Leucine (sterile-filtered) 0.1 g/l CaCO₃ 25 g/l

[0155] The CSL, MOPS and the salt solution were brought to pH 7 withaqueous ammonia and autoclaved. The sterile substrate and vitaminsolutions were then added, as well as the CaCO₃ autoclaved in the drystate. Culturing was carried out in a 10 ml volume in a 100 ml conicalflask with baffles. Tetracycline (5 mg/l) and kanamycin (25 mg/l) wereadded. Culturing was carried out at 33° C. and 80% atmospheric humidity.

[0156] After 72 hours, the OD was determined at a measurement wavelengthof 660 nm with a Biomek 1000 (Beckmann Instruments GmbH, Munchen). Theamount of lysine formed was determined with an amino acid analyzer fromEppendorf-BioTronik (Hamburg, Germany) by ion exchange chromatographyand post-column derivatization with ninhydrin detection. The result ofthe experiment is shown in Table 3. TABLE 3 OD L-Lysine HCl Strain (660nm) g/l DSM5715 10.8 16.0 DSM5715/pECgnd 7.6 16.5 DSM5715::pCR2.1poxBint7.1 16.7 DSM5715::pCR2.1poxBint/ 7.2 17.1 pECgnd

[0157]

1 16 1 252 DNA Corynebacterium glutamicum 1 atggtccaca acggcatcgagtacgccgac atgcaggtca tcggcgaggc ataccacctt 60 ctgccctacg cagcaggcatgcagccagct gaaatcgctg aggttttcaa ggaatggaac 120 gcaggcgacc tggattcctacctcatcgaa atcaccgcag aggttctctc ccaggtggat 180 gctgaaaccg gcaagccactaatcgacgtc atcgttgacg ctgcaggtca gaagggcacc 240 ggcaagtgga ct 252 2 2335DNA Corynebacterium glutamicum CDS (474)..(1850) gnd 2 ttgttcggccacgatgacac cggagctcac agcagaaatg aagtcggtgt tgttgttgat 60 gccgacgaccatttttccag gggcggaaat catgctggcg actgatccag tggattcggc 120 gatggcggcgtagacaccac cgttgaccaa gcccaccact tgcaggtgct tggatgccac 180 gtgaagttcgctgaccaccc ggccgggctc gatggtggtg tagcgcagcc ccagattgcg 240 gtcgaggccataattggcgt tgttgagtgc ttcaagttcg tctgtggtta aagctctggt 300 ggcggcaagttctgcaagcg aaagcagatc ttggggttga tcatcgcggg aagtcataat 360 taattactctagtcggccta aaatggttgg attttcacct cctgtgacct ggtaaaatcg 420 ccactacccccaaatggtca caccttttag gccgattttg ctgacaccgg gct atg 476 Met 1 ccg tcaagt acg atc aat aac atg act aat gga gat aat ctc gca cag 524 Pro Ser SerThr Ile Asn Asn Met Thr Asn Gly Asp Asn Leu Ala Gln 5 10 15 atc ggc gttgta ggc cta gca gta atg ggc tca aac ctc gcc cgc aac 572 Ile Gly Val ValGly Leu Ala Val Met Gly Ser Asn Leu Ala Arg Asn 20 25 30 ttc gcc cgc aacggc aac act gtc gct gtc tac aac cgc agc act gac 620 Phe Ala Arg Asn GlyAsn Thr Val Ala Val Tyr Asn Arg Ser Thr Asp 35 40 45 aaa acc gac aag ctcatc gcc gat cac ggc tcc gaa ggc aac ttc atc 668 Lys Thr Asp Lys Leu IleAla Asp His Gly Ser Glu Gly Asn Phe Ile 50 55 60 65 cct tct gca acc gtcgaa gag ttc gta gca tcc ctg gaa aag cca cgc 716 Pro Ser Ala Thr Val GluGlu Phe Val Ala Ser Leu Glu Lys Pro Arg 70 75 80 cgc gcc atc atc atg gttcag gct ggt aac gcc acc gac gca gtc atc 764 Arg Ala Ile Ile Met Val GlnAla Gly Asn Ala Thr Asp Ala Val Ile 85 90 95 aac cag ctg gca gat gcc atggac gaa ggc gac atc atc atc gac ggc 812 Asn Gln Leu Ala Asp Ala Met AspGlu Gly Asp Ile Ile Ile Asp Gly 100 105 110 ggc aac gcc ctc tac acc gacacc att cgt cgc gag aag gaa atc tcc 860 Gly Asn Ala Leu Tyr Thr Asp ThrIle Arg Arg Glu Lys Glu Ile Ser 115 120 125 gca cgc ggt ctc cac ttc gtcggt gct ggt atc tcc ggc ggc gaa gaa 908 Ala Arg Gly Leu His Phe Val GlyAla Gly Ile Ser Gly Gly Glu Glu 130 135 140 145 ggc gca ctc aac ggc ccatcc atc atg cct ggt ggc cca gca aag tcc 956 Gly Ala Leu Asn Gly Pro SerIle Met Pro Gly Gly Pro Ala Lys Ser 150 155 160 tac gag tcc ctc gga ccactg ctt gag tcc atc gct gcc aac gtt gac 1004 Tyr Glu Ser Leu Gly Pro LeuLeu Glu Ser Ile Ala Ala Asn Val Asp 165 170 175 ggc acc cca tgt gtc acccac atc ggc cca gac ggc gcc ggc cac ttc 1052 Gly Thr Pro Cys Val Thr HisIle Gly Pro Asp Gly Ala Gly His Phe 180 185 190 gtc aag atg gtc cac aacggc atc gag tac gcc gac atg cag gtc atc 1100 Val Lys Met Val His Asn GlyIle Glu Tyr Ala Asp Met Gln Val Ile 195 200 205 ggc gag gca tac cac cttctg ccc tac gca gca ggc atg cag cca gct 1148 Gly Glu Ala Tyr His Leu LeuPro Tyr Ala Ala Gly Met Gln Pro Ala 210 215 220 225 gaa atc gct gag gttttc aag gaa tgg aac gca ggc gac ctg gat tcc 1196 Glu Ile Ala Glu Val PheLys Glu Trp Asn Ala Gly Asp Leu Asp Ser 230 235 240 tac ctc atc gaa atcacc gca gag gtt ctc tcc cag gtg gat gct gaa 1244 Tyr Leu Ile Glu Ile ThrAla Glu Val Leu Ser Gln Val Asp Ala Glu 245 250 255 acc ggc aag cca ctaatc gac gtc atc gtt gac gct gca ggt cag aag 1292 Thr Gly Lys Pro Leu IleAsp Val Ile Val Asp Ala Ala Gly Gln Lys 260 265 270 ggc acc ggc aag tggact gtc aag gct gct ctt gat ctg ggt att gct 1340 Gly Thr Gly Lys Trp ThrVal Lys Ala Ala Leu Asp Leu Gly Ile Ala 275 280 285 acc acc ggc atc ggcgaa cgt gtt ttc gca cgt gca ctc tcc ggc gca 1388 Thr Thr Gly Ile Gly GluArg Val Phe Ala Arg Ala Leu Ser Gly Ala 290 295 300 305 acc agc cag cgcgct gca gca cag ggc aac cta cct gca ggt gtc ctc 1436 Thr Ser Gln Arg AlaAla Ala Gln Gly Asn Leu Pro Ala Gly Val Leu 310 315 320 acc gat ctg gaagca ctt ggc gtg gac aag gca cag ttc gtc gaa gga 1484 Thr Asp Leu Glu AlaLeu Gly Val Asp Lys Ala Gln Phe Val Glu Gly 325 330 335 ctt cgc cgt gcactg tac gca tcc aag ctt gtt gct tac gca cag ggc 1532 Leu Arg Arg Ala LeuTyr Ala Ser Lys Leu Val Ala Tyr Ala Gln Gly 340 345 350 ttc gac gag atcaag gct ggc tcc gac gag aac aac tgg gac gtt gac 1580 Phe Asp Glu Ile LysAla Gly Ser Asp Glu Asn Asn Trp Asp Val Asp 355 360 365 cct cgc gac ctcgct acc atc tgg cgc ggc ggc tgc atc att cgc gct 1628 Pro Arg Asp Leu AlaThr Ile Trp Arg Gly Gly Cys Ile Ile Arg Ala 370 375 380 385 aag ttc ctcaac cgc atc gtc gaa gca tac gat gca aac gct gaa ctt 1676 Lys Phe Leu AsnArg Ile Val Glu Ala Tyr Asp Ala Asn Ala Glu Leu 390 395 400 gag tcc ctgctg ctc gat cct tac ttc aag agc gag ctc ggc gac ctc 1724 Glu Ser Leu LeuLeu Asp Pro Tyr Phe Lys Ser Glu Leu Gly Asp Leu 405 410 415 atc gat tcatgg cgt cgc gtg att gtc acc gcc acc cag ctt ggc ctg 1772 Ile Asp Ser TrpArg Arg Val Ile Val Thr Ala Thr Gln Leu Gly Leu 420 425 430 cca atc ccagtg ttc gct tcc tcc ctg tcc tac tac gac agc ctg cgt 1820 Pro Ile Pro ValPhe Ala Ser Ser Leu Ser Tyr Tyr Asp Ser Leu Arg 435 440 445 gca gag cgtctg cca gca gcc ctg atc cac tagtgtcgac ctgcaggcgc 1870 Ala Glu Arg LeuPro Ala Ala Leu Ile His 450 455 gcgagctcca gcttttgttc cctttagtgagggttaattt cgagcttggc gtaatcaagg 1930 tcatagctgt ttcctgtgtg aaattgttatccgctcacaa ttccacacaa tatacgagcc 1990 ggaagtataa agtgtaaagc ctggggtgcctaatgagtga gctaactcac agtaattgcg 2050 gctagcggat ctgacggttc actaaaccagctctgcttat atagacctcc caccgtacac 2110 gcctaccgcc catttgcgtc aatggggcggagttgttacg acattttgga aagtcccgtt 2170 gattttggtg ccaaaacaaa ctcccattgacgtcaatggg gtggagactt ggaaatcccc 2230 gtgagtcaaa ccgctatcca cgcccattgatgtactgcca aaaccgcatc accatggtaa 2290 tagcgatgac taatacgtag atgtactgccaagtaggaaa gtccc 2335 3 459 PRT Corynebacterium glutamicum 3 Met Pro SerSer Thr Ile Asn Asn Met Thr Asn Gly Asp Asn Leu Ala 1 5 10 15 Gln IleGly Val Val Gly Leu Ala Val Met Gly Ser Asn Leu Ala Arg 20 25 30 Asn PheAla Arg Asn Gly Asn Thr Val Ala Val Tyr Asn Arg Ser Thr 35 40 45 Asp LysThr Asp Lys Leu Ile Ala Asp His Gly Ser Glu Gly Asn Phe 50 55 60 Ile ProSer Ala Thr Val Glu Glu Phe Val Ala Ser Leu Glu Lys Pro 65 70 75 80 ArgArg Ala Ile Ile Met Val Gln Ala Gly Asn Ala Thr Asp Ala Val 85 90 95 IleAsn Gln Leu Ala Asp Ala Met Asp Glu Gly Asp Ile Ile Ile Asp 100 105 110Gly Gly Asn Ala Leu Tyr Thr Asp Thr Ile Arg Arg Glu Lys Glu Ile 115 120125 Ser Ala Arg Gly Leu His Phe Val Gly Ala Gly Ile Ser Gly Gly Glu 130135 140 Glu Gly Ala Leu Asn Gly Pro Ser Ile Met Pro Gly Gly Pro Ala Lys145 150 155 160 Ser Tyr Glu Ser Leu Gly Pro Leu Leu Glu Ser Ile Ala AlaAsn Val 165 170 175 Asp Gly Thr Pro Cys Val Thr His Ile Gly Pro Asp GlyAla Gly His 180 185 190 Phe Val Lys Met Val His Asn Gly Ile Glu Tyr AlaAsp Met Gln Val 195 200 205 Ile Gly Glu Ala Tyr His Leu Leu Pro Tyr AlaAla Gly Met Gln Pro 210 215 220 Ala Glu Ile Ala Glu Val Phe Lys Glu TrpAsn Ala Gly Asp Leu Asp 225 230 235 240 Ser Tyr Leu Ile Glu Ile Thr AlaGlu Val Leu Ser Gln Val Asp Ala 245 250 255 Glu Thr Gly Lys Pro Leu IleAsp Val Ile Val Asp Ala Ala Gly Gln 260 265 270 Lys Gly Thr Gly Lys TrpThr Val Lys Ala Ala Leu Asp Leu Gly Ile 275 280 285 Ala Thr Thr Gly IleGly Glu Arg Val Phe Ala Arg Ala Leu Ser Gly 290 295 300 Ala Thr Ser GlnArg Ala Ala Ala Gln Gly Asn Leu Pro Ala Gly Val 305 310 315 320 Leu ThrAsp Leu Glu Ala Leu Gly Val Asp Lys Ala Gln Phe Val Glu 325 330 335 GlyLeu Arg Arg Ala Leu Tyr Ala Ser Lys Leu Val Ala Tyr Ala Gln 340 345 350Gly Phe Asp Glu Ile Lys Ala Gly Ser Asp Glu Asn Asn Trp Asp Val 355 360365 Asp Pro Arg Asp Leu Ala Thr Ile Trp Arg Gly Gly Cys Ile Ile Arg 370375 380 Ala Lys Phe Leu Asn Arg Ile Val Glu Ala Tyr Asp Ala Asn Ala Glu385 390 395 400 Leu Glu Ser Leu Leu Leu Asp Pro Tyr Phe Lys Ser Glu LeuGly Asp 405 410 415 Leu Ile Asp Ser Trp Arg Arg Val Ile Val Thr Ala ThrGln Leu Gly 420 425 430 Leu Pro Ile Pro Val Phe Ala Ser Ser Leu Ser TyrTyr Asp Ser Leu 435 440 445 Arg Ala Glu Arg Leu Pro Ala Ala Leu Ile His450 455 4 2160 DNA Corynebacterium glutamicum CDS (327)..(2063) poxB 4ttagaggcga ttctgtgagg tcactttttg tggggtcggg gtctaaattt ggccagtttt 60cgaggcgacc agacaggcgt gcccacgatg tttaaatagg cgatcggtgg gcatctgtgt 120ttggtttcga cgggctgaaa ccaaaccaga ctgcccagca acgacggaaa tcccaaaagt 180gggcatccct gtttggtacc gagtacccac ccgggcctga aactccctgg caggcgggcg 240aagcgtggca acaactggaa tttaagagca caattgaagt cgcaccaagt taggcaacac 300aatagccata acgttgagga gttcag atg gca cac agc tac gca gaa caa tta 353 MetAla His Ser Tyr Ala Glu Gln Leu 1 5 att gac act ttg gaa gct caa ggt gtgaag cga att tat ggt ttg gtg 401 Ile Asp Thr Leu Glu Ala Gln Gly Val LysArg Ile Tyr Gly Leu Val 10 15 20 25 ggt gac agc ctt aat ccg atc gtg gatgct gtc cgc caa tca gat att 449 Gly Asp Ser Leu Asn Pro Ile Val Asp AlaVal Arg Gln Ser Asp Ile 30 35 40 gag tgg gtg cac gtt cga aat gag gaa gcggcg gcg ttt gca gcc ggt 497 Glu Trp Val His Val Arg Asn Glu Glu Ala AlaAla Phe Ala Ala Gly 45 50 55 gcg gaa tcg ttg atc act ggg gag ctg gca gtatgt gct gct tct tgt 545 Ala Glu Ser Leu Ile Thr Gly Glu Leu Ala Val CysAla Ala Ser Cys 60 65 70 ggt cct gga aac aca cac ctg att cag ggt ctt tatgat tcg cat cga 593 Gly Pro Gly Asn Thr His Leu Ile Gln Gly Leu Tyr AspSer His Arg 75 80 85 aat ggt gcg aag gtg ttg gcc atc gct agc cat att ccgagt gcc cag 641 Asn Gly Ala Lys Val Leu Ala Ile Ala Ser His Ile Pro SerAla Gln 90 95 100 105 att ggt tcg acg ttc ttc cag gaa acg cat ccg gagatt ttg ttt aag 689 Ile Gly Ser Thr Phe Phe Gln Glu Thr His Pro Glu IleLeu Phe Lys 110 115 120 gaa tgc tct ggt tac tgc gag atg gtg aat ggt ggtgag cag ggt gaa 737 Glu Cys Ser Gly Tyr Cys Glu Met Val Asn Gly Gly GluGln Gly Glu 125 130 135 cgc att ttg cat cac gcg att cag tcc acc atg gcgggt aaa ggt gtg 785 Arg Ile Leu His His Ala Ile Gln Ser Thr Met Ala GlyLys Gly Val 140 145 150 tcg gtg gta gtg att cct ggt gat atc gct aag gaagac gca ggt gac 833 Ser Val Val Val Ile Pro Gly Asp Ile Ala Lys Glu AspAla Gly Asp 155 160 165 ggt act tat tcc aat tcc act att tct tct ggc actcct gtg gtg ttc 881 Gly Thr Tyr Ser Asn Ser Thr Ile Ser Ser Gly Thr ProVal Val Phe 170 175 180 185 ccg gat cct act gag gct gca gcg ctg gtg gaggcg att aac aac gct 929 Pro Asp Pro Thr Glu Ala Ala Ala Leu Val Glu AlaIle Asn Asn Ala 190 195 200 aag tct gtc act ttg ttc tgc ggt gcg ggc gtgaag aat gct cgc gcg 977 Lys Ser Val Thr Leu Phe Cys Gly Ala Gly Val LysAsn Ala Arg Ala 205 210 215 cag gtg ttg gag ttg gcg gag aag att aaa tcaccg atc ggg cat gcg 1025 Gln Val Leu Glu Leu Ala Glu Lys Ile Lys Ser ProIle Gly His Ala 220 225 230 ctg ggt ggt aag cag tac atc cag cat gag aatccg ttt gag gtc ggc 1073 Leu Gly Gly Lys Gln Tyr Ile Gln His Glu Asn ProPhe Glu Val Gly 235 240 245 atg tct ggc ctg ctt ggt tac ggc gcc tgc gtggat gcg tcc aat gag 1121 Met Ser Gly Leu Leu Gly Tyr Gly Ala Cys Val AspAla Ser Asn Glu 250 255 260 265 gcg gat ctg ctg att cta ttg ggt acg gatttc cct tat tct gat ttc 1169 Ala Asp Leu Leu Ile Leu Leu Gly Thr Asp PhePro Tyr Ser Asp Phe 270 275 280 ctt cct aaa gac aac gtt gcc cag gtg gatatc aac ggt gcg cac att 1217 Leu Pro Lys Asp Asn Val Ala Gln Val Asp IleAsn Gly Ala His Ile 285 290 295 ggt cga cgt acc acg gtg aag tat ccg gtgacc ggt gat gtt gct gca 1265 Gly Arg Arg Thr Thr Val Lys Tyr Pro Val ThrGly Asp Val Ala Ala 300 305 310 aca atc gaa aat att ttg cct cat gtg aaggaa aaa aca gat cgt tcc 1313 Thr Ile Glu Asn Ile Leu Pro His Val Lys GluLys Thr Asp Arg Ser 315 320 325 ttc ctt gat cgg atg ctc aag gca cac gagcgt aag ttg agc tcg gtg 1361 Phe Leu Asp Arg Met Leu Lys Ala His Glu ArgLys Leu Ser Ser Val 330 335 340 345 gta gag acg tac aca cat aac gtc gagaag cat gtg cct att cac cct 1409 Val Glu Thr Tyr Thr His Asn Val Glu LysHis Val Pro Ile His Pro 350 355 360 gaa tac gtt gcc tct att ttg aac gagctg gcg gat aag gat gcg gtg 1457 Glu Tyr Val Ala Ser Ile Leu Asn Glu LeuAla Asp Lys Asp Ala Val 365 370 375 ttt act gtg gat acc ggc atg tgc aatgtg tgg cat gcg agg tac atc 1505 Phe Thr Val Asp Thr Gly Met Cys Asn ValTrp His Ala Arg Tyr Ile 380 385 390 gag aat ccg gag gga acg cgc gac tttgtg ggt tca ttc cgc cac ggc 1553 Glu Asn Pro Glu Gly Thr Arg Asp Phe ValGly Ser Phe Arg His Gly 395 400 405 acg atg gct aat gcg ttg cct cat gcgatt ggt gcg caa agt gtt gat 1601 Thr Met Ala Asn Ala Leu Pro His Ala IleGly Ala Gln Ser Val Asp 410 415 420 425 cga aac cgc cag gtg atc gcg atgtgt ggc gat ggt ggt ttg ggc atg 1649 Arg Asn Arg Gln Val Ile Ala Met CysGly Asp Gly Gly Leu Gly Met 430 435 440 ctg ctg ggt gag ctt ctg acc gttaag ctg cac caa ctt ccg ctg aag 1697 Leu Leu Gly Glu Leu Leu Thr Val LysLeu His Gln Leu Pro Leu Lys 445 450 455 gct gtg gtg ttt aac aac agt tctttg ggc atg gtg aag ttg gag atg 1745 Ala Val Val Phe Asn Asn Ser Ser LeuGly Met Val Lys Leu Glu Met 460 465 470 ctc gtg gag gga cag cca gaa tttggt act gac cat gag gaa gtg aat 1793 Leu Val Glu Gly Gln Pro Glu Phe GlyThr Asp His Glu Glu Val Asn 475 480 485 ttc gca gag att gcg gcg gct gcgggt atc aaa tcg gta cgc atc acc 1841 Phe Ala Glu Ile Ala Ala Ala Ala GlyIle Lys Ser Val Arg Ile Thr 490 495 500 505 gat ccg aag aaa gtt cgc gagcag cta gct gag gca ttg gca tat cct 1889 Asp Pro Lys Lys Val Arg Glu GlnLeu Ala Glu Ala Leu Ala Tyr Pro 510 515 520 gga cct gta ctg atc gat atcgtc acg gat cct aat gcg ctg tcg atc 1937 Gly Pro Val Leu Ile Asp Ile ValThr Asp Pro Asn Ala Leu Ser Ile 525 530 535 cca cca acc atc acg tgg gaacag gtc atg gga ttc agc aag gcg gcc 1985 Pro Pro Thr Ile Thr Trp Glu GlnVal Met Gly Phe Ser Lys Ala Ala 540 545 550 acc cga acc gtc ttt ggt ggagga gta gga gcg atg atc gat ctg gcc 2033 Thr Arg Thr Val Phe Gly Gly GlyVal Gly Ala Met Ile Asp Leu Ala 555 560 565 cgt tcg aac ata agg aat attcct act cca tgatgattga tacacctgct 2083 Arg Ser Asn Ile Arg Asn Ile ProThr Pro 570 575 gttctcattg accgcgagcg cttaactgcc aacatttcca ggatggcagctcacgccggt 2143 gcccatgaga ttgccct 2160 5 579 PRT Corynebacteriumglutamicum 5 Met Ala His Ser Tyr Ala Glu Gln Leu Ile Asp Thr Leu Glu AlaGln 1 5 10 15 Gly Val Lys Arg Ile Tyr Gly Leu Val Gly Asp Ser Leu AsnPro Ile 20 25 30 Val Asp Ala Val Arg Gln Ser Asp Ile Glu Trp Val His ValArg Asn 35 40 45 Glu Glu Ala Ala Ala Phe Ala Ala Gly Ala Glu Ser Leu IleThr Gly 50 55 60 Glu Leu Ala Val Cys Ala Ala Ser Cys Gly Pro Gly Asn ThrHis Leu 65 70 75 80 Ile Gln Gly Leu Tyr Asp Ser His Arg Asn Gly Ala LysVal Leu Ala 85 90 95 Ile Ala Ser His Ile Pro Ser Ala Gln Ile Gly Ser ThrPhe Phe Gln 100 105 110 Glu Thr His Pro Glu Ile Leu Phe Lys Glu Cys SerGly Tyr Cys Glu 115 120 125 Met Val Asn Gly Gly Glu Gln Gly Glu Arg IleLeu His His Ala Ile 130 135 140 Gln Ser Thr Met Ala Gly Lys Gly Val SerVal Val Val Ile Pro Gly 145 150 155 160 Asp Ile Ala Lys Glu Asp Ala GlyAsp Gly Thr Tyr Ser Asn Ser Thr 165 170 175 Ile Ser Ser Gly Thr Pro ValVal Phe Pro Asp Pro Thr Glu Ala Ala 180 185 190 Ala Leu Val Glu Ala IleAsn Asn Ala Lys Ser Val Thr Leu Phe Cys 195 200 205 Gly Ala Gly Val LysAsn Ala Arg Ala Gln Val Leu Glu Leu Ala Glu 210 215 220 Lys Ile Lys SerPro Ile Gly His Ala Leu Gly Gly Lys Gln Tyr Ile 225 230 235 240 Gln HisGlu Asn Pro Phe Glu Val Gly Met Ser Gly Leu Leu Gly Tyr 245 250 255 GlyAla Cys Val Asp Ala Ser Asn Glu Ala Asp Leu Leu Ile Leu Leu 260 265 270Gly Thr Asp Phe Pro Tyr Ser Asp Phe Leu Pro Lys Asp Asn Val Ala 275 280285 Gln Val Asp Ile Asn Gly Ala His Ile Gly Arg Arg Thr Thr Val Lys 290295 300 Tyr Pro Val Thr Gly Asp Val Ala Ala Thr Ile Glu Asn Ile Leu Pro305 310 315 320 His Val Lys Glu Lys Thr Asp Arg Ser Phe Leu Asp Arg MetLeu Lys 325 330 335 Ala His Glu Arg Lys Leu Ser Ser Val Val Glu Thr TyrThr His Asn 340 345 350 Val Glu Lys His Val Pro Ile His Pro Glu Tyr ValAla Ser Ile Leu 355 360 365 Asn Glu Leu Ala Asp Lys Asp Ala Val Phe ThrVal Asp Thr Gly Met 370 375 380 Cys Asn Val Trp His Ala Arg Tyr Ile GluAsn Pro Glu Gly Thr Arg 385 390 395 400 Asp Phe Val Gly Ser Phe Arg HisGly Thr Met Ala Asn Ala Leu Pro 405 410 415 His Ala Ile Gly Ala Gln SerVal Asp Arg Asn Arg Gln Val Ile Ala 420 425 430 Met Cys Gly Asp Gly GlyLeu Gly Met Leu Leu Gly Glu Leu Leu Thr 435 440 445 Val Lys Leu His GlnLeu Pro Leu Lys Ala Val Val Phe Asn Asn Ser 450 455 460 Ser Leu Gly MetVal Lys Leu Glu Met Leu Val Glu Gly Gln Pro Glu 465 470 475 480 Phe GlyThr Asp His Glu Glu Val Asn Phe Ala Glu Ile Ala Ala Ala 485 490 495 AlaGly Ile Lys Ser Val Arg Ile Thr Asp Pro Lys Lys Val Arg Glu 500 505 510Gln Leu Ala Glu Ala Leu Ala Tyr Pro Gly Pro Val Leu Ile Asp Ile 515 520525 Val Thr Asp Pro Asn Ala Leu Ser Ile Pro Pro Thr Ile Thr Trp Glu 530535 540 Gln Val Met Gly Phe Ser Lys Ala Ala Thr Arg Thr Val Phe Gly Gly545 550 555 560 Gly Val Gly Ala Met Ile Asp Leu Ala Arg Ser Asn Ile ArgAsn Ile 565 570 575 Pro Thr Pro 6 875 DNA Corynebacterium glutamicum 6tgcgagatgg tgaatggtgg tgagcagggt gaacgcattt tgcatcacgc gattcagtcc 60accatggcgg gtaaaggtgt gtcggtggta gtgattcctg gtgatatcgc taaggaagac 120gcaggtgacg gtacttattc caattccact atttcttctg gcactcctgt ggtgttcccg 180gatcctactg aggctgcagc gctggtggag gcgattaaca acgctaagtc tgtcactttg 240ttctgcggtg cgggcgtgaa gaatgctcgc gcgcaggtgt tggagttggc ggagaagatt 300aaatcaccga tcgggcatgc gctgggtggt aagcagtaca tccagcatga gaatccgttt 360gaggtcggca tgtctggcct gcttggttac ggcgcctgcg tggatgcgtc caatgaggcg 420gatctgctga ttctattggg tacggatttc ccttattctg atttccttcc taaagacaac 480gttgcccagg tggatatcaa cggtgcgcac attggtcgac gtaccacggt gaagtatccg 540gtgaccggtg atgttgctgc aacaatcgaa aatattttgc ctcatgtgaa ggaaaaaaca 600gatcgttcct tccttgatcg gatgctcaag gcacacgagc gtaagttgag ctcggtggta 660gagacgtaca cacataacgt cgagaagcat gtgcctattc accctgaata cgttgcctct 720attttgaacg agctggcgga taaggatgcg gtgtttactg tggataccgg catgtgcaat 780gtgtggcatg cgaggtacat cgagaatccg gagggaacgc gcgactttgt gggttcattc 840cgccacggca cgatggctaa tgcgttgcct catgc 875 7 23 DNA Artificial sequenceDescription of artificial sequence Primer gnd1 7 atggtkcaca cyggyatygarta 23 8 21 DNA Artificial sequence Description of artificial sequencePrimer gnd2 8 rgtccayttr ccrgtrccyt t 21 9 17 DNA Artificial sequenceDescription of artificial sequence Internal primer 1 9 ggtggatgctgaaaccg 17 10 17 DNA Artificial sequence Description of artificialsequence Internal primer 2 10 gctgcatgcc tgctgcg 17 11 17 DNA Artificialsequence Description of artificial sequence Internal primer 3 11ttgttgctta cgcacag 17 12 17 DNA Artificial sequence Description ofartificial sequence Internal primer 4 12 tcgtaggact ttgctgg 17 13 21 DNAArtificial sequence Description of artificial sequence gnd fwd. primer13 actctagtcg gcctaaaatg g 21 14 21 DNA Artificial sequence Descriptionof artificial sequence gnd rev. primer 14 cacacaggaa acagatatga c 21 1520 DNA Artificial sequence Description of artificial sequence PrimerpoxBint1 15 tgcgagatgg tgaatggtgg 20 16 20 DNA Artificial sequenceDescription of artificial sequence Primer poxBint2 16 gcatgaggcaacgcattagc 20

What is claimed is:
 1. A process for the preparation of L-lysine,comprising: a) fermenting an L-lysine producing coryneform bacteria in aculture medium, the bacteria having at least an overexpressed geneencoding 6-phosphogluconate dehydrogenase; b) concentrating L-lysineproduced by said fermenting in the culture medium or in the cells of thebacteria; and c) isolating the L-lysine produced; wherein intracellularactivity of pyruvate oxidase encoded by a pyruvate oxidase gene isdecreased or switched off in the bacteria.
 2. The process according toclaim 1, wherein an endogenous gene encoding 6-phosphogluconatedehydrogenase is used as the overexpressed gene encoding6-phosphogluconate dehydrogenase.
 3. The process according to claim 1,wherein the overexpressed gene encoding 6-phosphogluconate dehydrogenaseis produced by transforming the bacteria with a plasmid vector carryingat least a gene encoding 6-phosphogluconate dehydrogenase and apromoter.
 4. The process according to claim 1, wherein the bacteria is astrain of the genus Corynebacterium.
 5. A process for the preparation ofan L-amino acid, comprising: a) fermenting an L-amino acid producingcoryneform bacteria in a culture medium, the bacteria having at least anoverexpressed gnd gene encoding 6-phosphogluconate dehydrogenase; b)concentrating L-amino acid produced by said fermenting in the culturemedium or in the cells of the bacteria; and d) isolating the L-aminoacid produced; wherein intracellular activity of pyruvate oxidaseencoded by a pyruvate oxidase gene is decreased or switched off in thebacteria; and wherein the L-amino acid is selected from the groupconsisting of L-threonine, L-isoleucine and L-tryptophan.
 6. An L-lysineproducing coryneform microorganism having increased intracellularactivity of 6-phosphogluconate dehydrogenase and decreased intracellularactivity of pyruvate oxidase.
 7. The plasmid vector pEC-T18mob2deposited under the designation DSM 13244 in E. coli K-12 DH5.
 8. Acoryneform microorganism transformed by introduction of the plasmidvector of claim 7, the coryneform microorganism also having a geneencoding 6-phosphogluconate dehydrogenase.
 9. The coryneformmicroorganism of claim 8, wherein the coryneform microorganism is of thegenus Corynebacterium.